Rage therapy.

Dr. Stanley Kolberg was not just murdered. His lifeless body was battered and broken almost beyond recognition, as though his unknown killer had been driven by a ferocious rage that had exploded madly out of control. As far as the Seattle police are concerned, there is no shortage of suspects. A distinguished psychiatrist, Kolberg specialized in anger management and often treated violent offenders with severe psychiatric disorders. His client list is a virtual lineup of sociopaths, psychotics, and convicted murderers, any one of whom might have unleashed their homicidal fury on the doctor.